PlzNavigate: stop navigations when opening a document for write

content/renderer/render_frame_impl.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 #define CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 579 matching lines @@
                    blink::WebHistoryCommitType commit_type) override;
   void didFinishLoad(blink::WebLocalFrame* frame) override;
   void didNavigateWithinPage(blink::WebLocalFrame* frame,
                              const blink::WebHistoryItem& item,
                              blink::WebHistoryCommitType commit_type,
                              bool content_initiated) override;
   void didUpdateCurrentHistoryItem() override;
   void didChangeThemeColor() override;
   void dispatchLoad() override;
   blink::WebEffectiveConnectionType getEffectiveConnectionType() override;
+  void abortClientNavigation() override;
   void didChangeSelection(bool is_empty_selection) override;
   bool handleCurrentKeyboardEvent() override;
   blink::WebColorChooser* createColorChooser(
       blink::WebColorChooserClient* client,
       const blink::WebColor& initial_color,
       const blink::WebVector<blink::WebColorSuggestion>& suggestions) override;
   void runModalAlertDialog(const blink::WebString& message) override;
   bool runModalConfirmDialog(const blink::WebString& message) override;
   bool runModalPromptDialog(const blink::WebString& message,
                             const blink::WebString& default_value,
@@ skipping 814 matching lines @@
   std::unique_ptr<PendingNavigationInfo> pending_navigation_info_;
 
   base::WeakPtrFactory<RenderFrameImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_IMPL_H_